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https://issues.apache.org/jira/browse/LANG-453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12618760#action_12618760
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Olaf Tomczak commented on LANG-453:
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Thanks Gary. You're right - the object is unregistered - sorry for posting
issue without investigating it a little bit more. I was looking for memory leak
in my application which uses Toplink JPA and created a test case which proved
that using toString() method before persisting my objects caused them to stay
on the heap forever. I'll try to isolate the problem and get back to you.
> ToStringBuilder can cause serious memory leaks
> ----------------------------------------------
>
> Key: LANG-453
> URL: https://issues.apache.org/jira/browse/LANG-453
> Project: Commons Lang
> Issue Type: Improvement
> Affects Versions: 2.3
> Environment: all
> Reporter: Olaf Tomczak
>
> ToStringBuilder's constructor registers object passed as argument in thread
> local static registry. This causes serious memory problems in applications
> that run for a long time, use thread pooling and process large amount of data
> (e.g. enterprise web applications). Each call to toString method on an object
> causes this object to be practically impossible to garbage collect.
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